WO2022143378A1

WO2022143378A1 - Drive block-driven single-arm type conduction and sound production mechanism applied to keyboard switch

Info

Publication number: WO2022143378A1
Application number: PCT/CN2021/140721
Authority: WO
Inventors: 吴福喜; 吕攀豪
Original assignee: 东莞市凯华电子有限公司
Priority date: 2020-12-29
Filing date: 2021-12-23
Publication date: 2022-07-07
Also published as: TWM629344U; CN114694992A

Abstract

Disclosed is a drive block-driven single-arm type conduction and sound production mechanism applied to a keyboard switch, comprising a balance frame, a drive block triggered by the balance frame to act, and a conduction and sound production component triggered by the drive block to conduct and produce sound. The conduction and sound production assembly comprises an elastic body and at least one conduction part. The elastic body is provided with a conduction and sound production elastic arm extending above the upper part of the conduction part. The conduction and sound production elastic arm is triggered by the drive block to act. The drive block-driven single-arm type conduction and sound production mechanism applied to a keyboard switch provided in the present invention can achieve the conduction and sound production functions. The conduction and sound production action accuracy is high, the conduction and sound production sensitivity can be improved, the occupied space is small, and thinning of the keyboard switch is facilitated.

Description

A drive block-driven single-arm conduction sounding mechanism applied to a keyboard switch

technical field

The invention relates to the field of keyboard switches, in particular to a driving block-driven single-arm conduction sounding mechanism applied to keyboard switches.

Background technique

At present, there are many keyboard switches with sound on the market, all of which are adding a sound-emitting structure to the traditional keyboard switch. This sound-emitting structure is separated from the conduction structure, and the two structures occupy a lot of space in the keyboard switch respectively, resulting in the keyboard switch. It is difficult to make thin.

At the same time, the conduction structure and/or sound-emitting structure in the existing keyboard switch has low action accuracy, resulting in low trigger sensitivity of the conduction function and sound-emitting function, and is easy to wear and has a short life after long-term use.

SUMMARY OF THE INVENTION

In view of the above deficiencies, the purpose of the present invention is to provide a single-arm conduction sounding mechanism driven by a driving block applied to a keyboard switch, which can realize conduction and sounding functions, and has high conduction and sounding action accuracy, and can improve conduction and sounding. The sound sensitivity is small, and the space occupied is small, which is conducive to realizing the thinning of the keyboard switch.

The technical scheme that the present invention adopts to achieve the above purpose is:

A drive block-driven single-arm conduction sounding mechanism applied to a keyboard switch is characterized in that it includes a gimbal, a drive block triggered by the gimbal, and a conduction triggered by the drive block and sound A sounding assembly, wherein the conducting sounding assembly includes an elastic body and at least one conducting portion, the elastic body has a conducting sounding elastic arm extending above the conducting portion, and the conducting sounding elastic arm is triggered by a driving block action.

As a further improvement of the present invention, the conduction sounding assembly includes two conduction parts, namely a first conduction part and a second conduction part, the first conduction part is in contact with the elastic body, and the conduction sounding bomb The arm extends above the second conductive portion.

As a further improvement of the present invention, the elastic body is a torsion spring.

As a further improvement of the present invention, the material of the torsion spring is copper.

As a further improvement of the present invention, the material of the torsion spring is phosphor bronze.

As a further improvement of the present invention, the conduction sounding assembly is installed in a mounting seat, and a movable groove for the conduction sounding elastic arm is formed on the lower end surface of the mounting seat, and a downwardly protruding groove is formed in the movable groove There is an installation shaft for the main body of the torsion spring to be installed, and an opening for exposing the end of the sounding elastic arm is opened on the installation seat.

As a further improvement of the present invention, a guiding slope is formed on the inner wall of the movable groove close to the conducting sounding elastic arm.

As a further improvement of the present invention, the first conducting part and the second conducting part are both conductive sheets, the conductive sheets are arranged at the lower end of the movable slot and fastened to the mounting seat, and the conductive sheets are electrically connected to the PCB board superior.

As a further improvement of the present invention, a pressing block is formed on the driving block for conducting the end of the sounding elastic arm.

As a further improvement of the present invention, a limit hook is formed on one side of the pressing block to limit the position of the end of the conducting sounding elastic arm.

As a further improvement of the present invention, an inclined surface is formed on the pressing block.

As a further improvement of the present invention, the driving block is arranged around the periphery of the mounting seat, one end of the driving block is rotatably arranged on the mounting seat, and the pressing block is arranged on the other end of the driving block.

As a further improvement of the present invention, a pressing link block is extended on the other end of the driving block, and a protrusion located above the pressing link block is protruded on the balance frame.

As a further improvement of the present invention, the balance frame includes a balance rod A, a balance rod B, and a return tension spring connected between the balance rod A and the balance rod B, wherein the protrusion is arranged on the balance rod A or balance bar B.

The beneficial effects of the present invention are:

(1) By integrating the components that realize the functions of conduction and sound, specifically, the functions of conduction and sound can be realized by a single elastic arm (conducting sounding elastic arm) on the elastic body, which is similar to the existing conduction structure. Compared with the sound-emitting structure, the structure is greatly simplified, the volume of the entire component is reduced, and the occupied space is small, which is beneficial to realize the thinning of the keyboard switch.

(2) The gimbal linkage drive block is used to trigger the conduction and sound components to achieve two functions. One press can realize the conduction and sound functions, which not only has high accuracy of action, but also improves the sensitivity of conduction and sound; moreover, Compared with the existing keyboard switch, the structure such as the guide core is omitted, the occupation of the internal space is reduced, and the thinning of the keyboard switch is facilitated.

(3) The phosphor bronze torsion spring is used as the elastic body. The phosphor bronze torsion spring has the characteristics of large elasticity, large current, low resistance, high sensitivity and long life, which can significantly improve the sensitivity of conduction action and sounding action.

The above is an overview of the technical solutions of the invention. The invention will be further described below with reference to the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the exploded view of the present invention;

Fig. 2 is the overall structure schematic diagram of the present invention;

Fig. 3 is a partial exploded view of the present invention;

4 is a schematic structural diagram of the conductive sound-emitting component installed in the mounting seat according to the present invention;

5 is a schematic structural diagram of a conducting sound-emitting assembly in the present invention;

6 is a schematic structural diagram of the torsion spring installed in the mounting seat according to the present invention;

7 is a schematic structural diagram of the first conducting portion and the second conducting portion being mounted on the mounting seat in the present invention;

8 is a schematic diagram of the external structure of the conduction sounding mechanism installed in the keyboard switch of the present invention;

9 is a cross-sectional view of the conduction sounding assembly in a disconnected state in the present invention;

FIG. 10 is a cross-sectional view of the conduction sounding component in the conduction state of the present invention.

Detailed ways

In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments.

1 and FIG. 2 , an embodiment of the present invention provides a single-arm conduction sounding mechanism driven by a driving block applied to a keyboard switch, comprising a gimbal 1 , a driving block 2 triggered by the gimbal 1 , and A conduction sounding component 3 is triggered by the driving block 2 to conduct conduction and sound, wherein, the conduction sounding component 3 includes an elastic body 33 and at least one conduction part, and the elastic body 33 has a conductive part extending above the conduction part. A conductive sounding elastic arm 331 is activated by the driving block 2 . When the gimbal 1 is pressed down, the gimbal 1 drives the driving block 2 to move down, and the driven block 2 drives the conductive sounding arm 331 of the elastic body 33 to move down. A conduction signal is generated between the sounding elastic arm 331 and the conduction part to realize the conduction function; then, the conduction sounding elastic arm 331 bounces and knocks the driving block 2 and/or other components to generate sound to achieve the sounding function. When the pressure on the gimbal 1 is released, the force of the gimbal 1 on the driving block 2 disappears, and the force of the driving block 2 on the conducting sounding elastic arm 331 disappears. The restoring force moves up and resets, the conduction signal disappears, and the disconnection function is realized.

The driving block of this embodiment drives the single-arm conduction sounding mechanism to be applied to the keyboard switch. Each time the switch is pressed, the conduction function of the switch is realized, and the sounding function is also realized, and the movement accuracy of each component is high, which can improve the conduction and Sound sensitivity, long life. At the same time, the conducting and sounding functions can be realized by a single conducting sounding elastic arm 331 on the elastic body 33, so that the volume of the entire component that realizes the conducting and sounding functions is reduced, and the occupied space is small, which is beneficial to realize the thin-type keyboard switch. change.

In this embodiment, the conducting sounding elastic arm 331 is combined with the conducting part to form various conducting components, for example:

(1) Mechanical conduction components;

(2) For light conduction components;

(3) Magnetic conduction components;

(4) Hall conduction components.

The following is an example of a mechanical conduction assembly formed by the conduction sounding elastic arm 331 and the conduction part. Specifically, as shown in FIG. 5 , the conduction sounding assembly 3 includes two conduction parts, which are the first A conducting portion 31 and a second conducting portion 32, the first conducting portion 31 is in contact with the elastic body 33 to achieve electrical connection, and the elastic body 33 and the first conducting portion 31 are combined to be equivalent to a moving piece; When the sound-emitting elastic arm 331 extends above the second conducting portion 32, the second conducting portion 32 is equivalent to a static piece.

Specifically, the elastic body 33 is a torsion spring 33', and the material of the torsion spring 33' is copper. When the first conducting portion 31 is in contact with the torsion spring 33', the first conducting portion 31 and the torsion spring are realized. 33' the electrical connection of both. Preferably, the material of the torsion spring 33' is phosphor bronze, which has the characteristics of high elasticity, large current, low resistance, high sensitivity and long life. Using it as the torsion spring 33' can significantly improve the conduction action. Sensitivity with vocal movements.

When the gimbal 1 is pressed down, the gimbal 1 drives the driving block 2 to move down, and the driven block 2 drives the sounding elastic arm 331 to contact the second conducting part 32, so that the elastic body 33 (torsion spring) 33') Realize the electrical conduction between the first conduction part 31 and the second conduction part 32, that is, to achieve the conduction function, as shown in Figure 10; when the pressure on the gimbal 1 is released, the sounding elastic arm is turned on The 331 is moved up and reset by its own elastic restoring force, and the conducting sounding elastic arm 331 is separated from the second conducting part 32 to realize the disconnection function, as shown in FIG. 9 .

In order to facilitate the conduction of the sounding elastic arm 331 and better contact with the second conduction part 32, a static contact 321 can be provided on the second conduction part 32, as shown in FIG. 9 and FIG. In the on state, the conductive sounding elastic arm 331 is in contact with the static contact 321 to achieve electrical conduction.

As for the installation method of the conduction sounding assembly 3 , as shown in FIG. 3 , FIG. 4 and FIG. 6 , the conduction sounding assembly 3 in this embodiment is installed on a mounting seat 4 . A movable groove 41 in which the sounding elastic arm 331 bounces, and a mounting shaft 42 for the main body of the torsion spring 33' is protruded downward in the movable groove 41 to limit the position of the main body of the torsion spring 33'. The seat 4 is provided with an opening 43 exposed from the end of the sounding elastic arm 331 for conducting the sound, so as to facilitate the driving block 2 to move down. When the driving block 2 drives the conductive sounding elastic arm 331 to move down, the conductive sounding elastic arm 331 moves down in the movable slot 41 .

When the driving block 2 drives the conductive sounding elastic arm 331 to move down, in order to make the conductive sounding elastic arm 331 detach from the driving block 2 and bounce, as shown in FIG. A guiding inclined surface 44 is formed on the inner wall of the sounding elastic arm 331. When the driving block 2 drives the conduction sounding elastic arm 331 to move down, the guiding inclined surface 44 guides the sounding elastic arm 331 to move to one side at the same time, so that After the conduction sounding elastic arm 331 moves down to a certain stroke, the conduction sounding elastic arm 331 is in contact with the second conduction part 32, and then the conduction sounding bomb arm 331 is successfully separated from the driving block 2 to the conduction sounding bomb arm 331. The downward acting surface, so as to bounce, knocking the driving block 2, the mounting seat 4 or other components to make a sound.

In this embodiment, in order to press the conduction sounding elastic arm 331 more accurately, as shown in FIG. The pressing block 21, when the driving block 2 moves down, is directly acted on by the pressing block 21 to conduct the sounding elastic arm 331 to achieve more accurate pressing.

At the same time, in order to enable the pressing block 21 to drive the conductive sounding elastic arm 331 to move downward until the conductive sounding elastic arm 331 can be in contact with the second conducting part 32, as shown in FIG. A limit hook 211 is formed on one side of the pressing block 21 to limit the end of the conducting sounding elastic arm 331 . When the pressing block 21 moves down, the limit hook 211 limits the end of the conductive sounding elastic arm 331, so that the pressing block 21 can drive the conductive sounding elastic arm 331 to move down until the conductive sounding elastic arm 331 and the After the second conducting portion 32 is in contact with the conducting portion, it is separated from the pressing block 21 and bounces, so as to realize the knocking sound.

In order to make the conductive sounding elastic arm 331 bounce smoothly after it is separated from the pressing block 21, as shown in FIG. The opening of the pressing block 21 and the bouncing provide a space to give way.

In this embodiment, as shown in FIG. 7 , the first conducting portion 31 and the second conducting portion 32 are both conductive sheets, and the conducting sheets are disposed at the lower end of the movable slot 41 and fastened to the mounting seat 4 . And the conductive sheet is electrically connected to the PCB board.

For the installation of the drive block 2, as shown in FIG. 2 and FIG. 3, the drive block 2 is arranged around the periphery of the mounting seat 4, and one end of the driving block 2 is rotatably arranged on the mounting seat 4, and the pressing block 21 is arranged on the mounting seat 4. on the other end of the drive block 2. Specifically, as shown in FIG. 3 , two rotation center holes 20 are formed at one end of the driving block 2 , and two rotation shafts 40 are arranged on the mounting base 4 to be inserted into the rotation center holes 20 . The gimbal 1 acts on the other end of the drive block 2, so that the other end of the drive block 2 swings downward, that is, swings downward with the rotating shaft 40 as the center point, so that the pressing block 21 acts on the conduction sounding elastic arm 331 as it moves downward; After the force received by the frame 1 disappears, the other end of the driving block 2 is driven to swing upward under the action of the elastic restoring force of the conducting sounding elastic arm 331, that is, the swing shaft 40 is used as the center point to swing upward and reset.

In order to act on the driving block 2 more accurately, as shown in FIG. 2 and FIG. 3 , in this embodiment, a pressing link block 23 is extended on the other end of the driving block 2 , and a protruding block 23 is located on the balance frame 1 . Press a bump 14 above the linkage block 23. Specifically, the balance frame 1 includes a balance rod A 11, a balance rod B 12, and a reset connected between the balance rod A 11 and the balance rod B 12. Tension spring 13, wherein the protrusion 14 is arranged on the balance rod A 11 or the balance rod B 12. When the gimbal 1 is forced to move downward, the bump 14 directly acts on the pressing link block 23 of the driving block 2 to drive the driving block 2 to swing downward.

When the single-arm conduction sounding mechanism driven by the driving block of this embodiment is applied to the keyboard switch, the balance rod A 11 and the balance rod B 12 are rotatably mounted on the base 10 , and the mounting seat 4 is also arranged on the base 10 1 to 3; at the same time, the balance rod A 11 and the balance rod B 12 are rotatably connected to the keycap 30, as shown in Figure 8. During the pressing process, the gimbal 1 plays a role of pressing and balancing, which is beneficial to improve the stability of the entire keyboard switch. Of course, the mounting seat 4 can also be directly disposed on the PCB. When the keycap 30 is pressed downward, the balance rod A 11 and the balance rod B 12 can be driven to swing downward.

As another implementation of this embodiment, when the conducting sound-emitting elastic arm 331 is combined with the conducting portion to form a pair of light conducting components, the conducting portion is composed of a light emitting tube and a light receiving tube, and emits sound when conducting A light blocking plate is arranged on the elastic arm 331 . The driving block 2 drives the light blocking plate on the sounding elastic arm 331 to conduct or block the optical signal path between the light emitting tube and the light receiving tube, so as to realize the on and off function of the switch. For the specific working principle, please refer to the following prior art: application number 201510964805.2, patent name: modular photoelectric switch keyboard button.

As another implementation of this embodiment, when the conducting sounding elastic arm 331 is combined with the conducting part to form a magnetic conduction component, the conducting part is a magnetic inductor, and a magnet is arranged on the conducting sounding elastic arm 331 . The drive block 2 drives the sounding elastic arm 331 to control the distance between the magnet and the magnetic inductor, so as to realize the on and off functions of the switch. For the specific working principle, please refer to the following prior art: application number: 201510049623.2, patent name: a key and a keyboard.

As another implementation of this embodiment, when the conduction sounding elastic arm 331 is combined with the conduction part to form a Hall conduction assembly, the conduction part is a Hall element, and is set on the conduction sounding elastic arm 331 magnet. The driving block 2 drives the sounding elastic arm 331 to control the distance between the magnet and the Hall element, so as to realize the on and off functions of the switch. For the specific working principle, please refer to the following prior art: application number: 201520868417.X, patent name: a keyboard switch assembly.

The above are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention. Therefore, other structures obtained by adopting the same or similar technical features as the above-mentioned embodiments of the present invention are all within the scope of the present invention. within the scope of protection.

Claims

A drive block-driven single-arm conduction sounding mechanism applied to a keyboard switch is characterized in that it includes a gimbal, a drive block triggered by the gimbal, and a conduction triggered by the drive block and sound A sounding assembly, wherein the conducting sounding assembly includes an elastic body and at least one conducting portion, the elastic body has a conducting sounding elastic arm extending above the conducting portion, and the conducting sounding elastic arm is triggered by a driving block action.
The single-arm conduction sounding mechanism driven by the driving block applied to a keyboard switch according to claim 1, wherein the conduction sounding assembly comprises two conduction parts, which are a first conduction part and a second conduction part respectively. A conducting portion, the first conducting portion is in contact with the elastic body, and the conducting sounding elastic arm extends above the second conducting portion.
The driving block applied to a keyboard switch to drive a single-arm conduction sounding mechanism according to claim 2, wherein the elastic body is a torsion spring.
The single-arm conduction sounding mechanism driven by the driving block applied to a keyboard switch according to claim 3, wherein the material of the torsion spring is copper.
The single-arm conduction sounding mechanism driven by the driving block applied to a keyboard switch according to claim 4, wherein the material of the torsion spring is phosphor bronze.
The drive block applied to a keyboard switch to drive a single-arm conduction sounding mechanism according to claim 3, wherein the conduction sounding assembly is installed in a mounting seat, and a supply guide is formed on the lower end surface of the mounting seat. A movable groove through which the sounding elastic arm bounces, a mounting shaft for installing the main body of the torsion spring is protruded downward in the movable groove, and a mounting shaft for exposing the end of the conducting sounding elastic arm is provided on the mounting seat. Open your mouth.
The single-arm conduction sounding mechanism driven by the driving block applied to a keyboard switch according to claim 6, wherein a guiding slope is formed on the inner wall of the movable groove close to the conduction sounding elastic arm.
The drive block applied to a keyboard switch to drive a single-arm conduction sounding mechanism according to claim 6, wherein the first conduction part and the second conduction part are both conductive sheets, and the conductive sheets are arranged on the The lower end of the movable slot is fastened on the mounting seat, and the conductive sheet is electrically connected to the PCB board.
The driving block applied to a keyboard switch to drive a single-arm conduction sounding mechanism according to claim 6, wherein a pressing block is formed on the driving block to act on the end of the conduction sounding elastic arm.
The single-arm conduction sounding mechanism driven by a driving block applied to a keyboard switch according to claim 9, wherein a limiter for the end of the conduction sounding elastic arm is formed on one side of the pressing block. A limit hook.
The single-arm conduction sounding mechanism driven by a driving block applied to a keyboard switch according to claim 9, wherein an inclined surface is formed on the pressing block.
The driving block applied to a keyboard switch to drive a single-arm conduction sounding mechanism according to claim 9, wherein the driving block is arranged around the periphery of the mounting seat, and one end of the driving block is rotatably arranged on the mounting seat, The pressing block is arranged on the other end of the driving block.
A single-arm conduction sounding mechanism driven by a drive block applied to a keyboard switch according to any one of claims 1 to 12, characterized in that, a pressing link block is extended on the other end of the drive block. A protruding block located above the pressing link block is protruded on the balance frame.
The single-arm conduction sounding mechanism driven by the driving block applied to a keyboard switch according to claim 13, wherein the balance frame comprises a balance rod A, a balance rod B, and a balance rod A and a balance rod connected to the balance rod A and the balance rod. A return tension spring between the rods B, wherein the convex block is arranged on the balance rod A or the balance rod B.